The National Association of Demolition Contractors (NADC), Doylestown, Pa., has published a revised and updated "Demolition Safety Manual" that catalogs the safest ways to perform diverse tasks while demolishing structures. The manual is free to each NADC member and additional copies are $25. Non-member cost is $100. Contact: NADC, 16 N. Franklin St., Doylestown, Pa. 18901. Phone toll-free: (800) 541-2412. E-mail: firstname.lastname@example.org.